Let’s see... and using CFCs — which are long out of patent — destroys the ozone layer. And burning “fossil fuels” will cause the icecaps to melt and destroy the world, so we need to build more nuclear plants. And professional journalism was investigated by John Chancellor, who found that the profession did a great job, and had the courage to say so during a network news program. And Aspirin, which has been out of patent for over a century, should be replaced by modern painkillers. Etc etc.
From the Guardian: Tony Metcalfe, president of the British Chiropractic Association, said that because the study had only looked at 15 Australian physiotherapists, direct comparisons could not be made with UK practitioners of spinal manipulative therapy.
"The study did not address chiropractic-only spinal mobilisation carried out by physiotherapists. The majority of participants had low velocity mobilisation techniques and only 5% experienced high velocity techniques. Chiropractic manipulation is based predominantly on high velocity techniques, so the results are therefore not comparable with chiropractic treatment."
Chiropractors and osteopathic physicians, aka osteopaths or D.O.s, use high velocity techniques. If your joints are misaligned, you can get instant relief.